* {
    margin: 0 auto;
    padding: 0;
}

#content {
    width: 400px;
    height: 500px;
    border: 1px solid gray;

}

#pic {
    width: 400px;
    height: 450px;

}

#pic img {
    width: 100%;
    height: 100%;
}

#list {
    width: 400px;
    height: 50px;

    list-style: none;
}

.item {
    width: 75px;
    height: 45px;
    background-color: pink;
    float: left;
    margin-left: 2.5px;
    margin-right: 2.5px;
    text-align: center;
    line-height: 45px;
}

.item:hover {
    background-color: aquamarine;
}